north carolina
CDL Practice Test

Welcome to the CDL practice test site for North Carolina. You can use this site to prepare for the official North Carolina DMV CDL Test. The questions on these practice tests apply to all of the areas you'll need to be knowledgeable in to obtain your NC CDL. You can take these practice tests as many times as you need to, and all of these tests are free. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

Cylinders containing compressed gases may only be loaded onto a vehicle without a flat floor or platform if the cylinders are:

Loaded into racks attached to the vehicle.

All of these answers are correct.

In boxes that will keep them from turning over.

Loaded in an upright or horizontal position.

2 / 40

What should you do before you begin to couple?

check your path for any hazards

position the fifth wheel beforehand

activate the spring brakes

inspect the condition of the frame of the tractor

3 / 40

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

the spring brakes may release

the fifth wheel may be misaligned

the dolly tow bar may fly up

the kingpin may snap in half

4 / 40

The baffles in a tank trailer help to control:

The distrubition of weight.

The movement of liquid from front to back.

The flow of liquid side to side.

The overall weight of the vehicle.

5 / 40

Where is compressed air stored?

in the hose lines

in the gasoline tank

in the compartment for the engine

in the storage tank

6 / 40

Make sure that____when the front trailer supports are up and the trailer is resting on the tractor.

there is enough clearance between the landing gear and the tractor frame

the safety latch is in the open position

there is enough clearance between the lower and upper fifth wheel

the kingpin has been removed

7 / 40

The front trailer supports should be____before driving away.

raised 1/2 way with the crank handle secured in its bracket

raised fully and the crank handle secured in its bracket

3 turns down from the top and the crank handle secured in its bracket

raised 1/3 of the way with the crank handle secured in its bracket

8 / 40

Buses may carry small-arms ammunition labeled ORM-D, emergency hospital supplies, and drugs. However, buses must never carry:

More than 500 pounds total of allowed hazardous materials, and no more than 100 pounds of any one class.

More than 1000 pounds total of allowed hazardous materials, and no more than 200 pounds of any one class.

More than 750 pounds total of allowed hazardous materials, and no more than 100 pounds of any one class.

More than 250 pounds total of all allowed hazardous materials.

9 / 40

Why should you cover cargo?

to protect individuals from any spilled cargo

because many states require it

all of these answers are correct

to protect your cargo from bad weather

10 / 40

What method should be used to test that the air is flowing to all the trailers?

listen for air flow after opening the shutoff valves at the rear of the last trailer

check the pressure indicator dial on the final trailer

only a certified mechanic can check for this

pump the brakes with the windows down

11 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

both of the answers listed

none of the answers listed

see if the air pressure drops more than 4 lbs in a minute while holding it down for a full minute in a combination vehicle

see if the air pressure drops more than 3 lbs in a minute while holding it down for that full minute in a single vehicle

12 / 40

What are spring brakes?

all of these answers are correct

they are brakes that automatically come on for a truck or trailer when the psi drops too low

they do not function when the psi falls below 30 psi

they are powerful springs that hold back air pressure when driving

13 / 40

Where are shut off valves located on trailers that are doubles or triples?

on service air lines

on emergency air lines

on parking brake lines

on emergency and service air lines

14 / 40

Select the true statement about baffled tankers:

None of the answers listed.

It has walls with holes inside for liquid to flow through.

It has separate tanks.

It has hollow balls in it to slow the motion of the liquid in the trailer.

15 / 40

Select the vehicle that off-tracks the most.

a 5-axle tractor that is towing a 45-foot long trailer

a 5-axle tractor that is towing a 40-foot long trailer

a 5-axle tractor that is towing a 32-foot long trailer

a 5-axle tractor that is towing a 52-foot long trailer

16 / 40

Do empty trucks have the best braking?

yes, but only if the truck is newer than 1998

yes

yes, but only on wet surfaces

17 / 40

What is a king pin?

it is a pin that locks the air brake lines together

it is a pin that locks the trailer to the tractor on the fifth wheel

it is a pin that a driver receives for being a safe driver

it is a pin that holds the wheel on to the axles

18 / 40

You do not have to stop at railroad crossings, but must slow down and carefully check for other vehicles:

At crossings marked as "exempt" or "abandoned".

Where a policeman or flagman is directing traffic.

All of these answers are correct.

If a traffic signal is green.

19 / 40

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

All answers listed

Tire rims

Budd spacing or spacers

Lug bolts

20 / 40

You should___to reduce the air leakage rate.

monitor the air pressure gauge as you press on the brake pedal

release the service brake as the engine is running

leave the engine running while charging the air system

release the service brake after turning off the engine

21 / 40

Never refuel your bus:

Without a static chain.

With a higher grade of fuel.

In a closed building with passengers on board.

With any of the windows open.

22 / 40

Mirrors with a convex surface or "spot" mirrors _____.

they show a larger area than flat mirrors so do not need to be checked as often

make things look closer and larger than they actually are

are illegal in most states

make things look farther away and smaller than they actually are

23 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

Any more that 450 feet.

Any more than safety required.

In an upwind direction.

Any more than 500 feet.

24 / 40

Select the true statement about slack adjusters:

they should only be adjusted by a mechanic that is certified in slack adjusters

they do not ever need to be adjusted

they can be adjusted automatically or manually

they should move a minimum of 2 inches from the push rod attachment

25 / 40

Which of the following statements about stopping distances is NOT true?

empty trucks require greater stopping distances because they have less traction

brakes, tires, springs and shocks are designed to work best when the truck is empty

trucks traveling at higher speeds require greater stopping distances

trucks traveling on ice or snow require greater stopping distances

26 / 40

An oncoming vehicle keeps its high beams on. You should deal with this hazard by:

Turning your high beams on to "get back at them".

None of these answers are correct.

Look slightly to the right at a right lane or edge marking, if available.

Quickly flash your high beams to give them fair warning.

27 / 40

It has just reached freezing. Which of the following areas is slippery?

all of these answers are correct

a bridge

a shaded area

wet-looking road

28 / 40

Which seats not securely fastened to the bus are usually allowed?

Window seats.

None of these answers are correct.

Any of the last row seats.

The driver's seat only.

29 / 40

An air system that is fully charged will typically have ___ psi of pressure.

125

200

250

30 / 40

After the initial drop, the maximum leakage rates per minute is:

3 psi for combination vehicle and 1 psi for single vehicle

4 psi for a combination vehicle and 3 psi for a single vehicle

10 psi for combination vehicle and 5 psi for single vehicle

6 psi for a combination vehicle and 5 psi for single vehicle

31 / 40

The school bus driver may be the only contact person from school system some parents meet. The percentage of such parents is as high as:

0.85

0.65

0.5

0.72

32 / 40

The pintle hook should be_____ and the converter dolly air tank drain valve is___when doing a walk around inspection of a triple or double trailer.

free, open

free, closed

latched, closed

latched, open

33 / 40

When is it best to wear your seat belt?

Always.

Only when you will be driving over 35 mph.

Only if required by company policy.

Only if your bus holds more than 27 people.

34 / 40

______is a device that connects the service and emergency air lines between the tractor and trailer.

Relay knife

Service lines

Glad hands

Top off valves

35 / 40

Which of the following statements is true about speed management?

All of these answers are correct.

Speed limits for buses are the same as cars.

You should be able to stop within the distance that you can see ahead.

The posted speed limit is safe for all conditions.

36 / 40

Remember to____when connecting the converter dolly to the rear trailer.

check the trailer height

ensure that the landing gear is slighty off of the ground

lock the trailer brakes

all answers listed

37 / 40

Select the true statement in regards to large combination vehicles taking longer to stop.

they take the same amount of time to stop when empty or loaded

they take longer to stop than bobtail tractors

they take longer to stop when loaded down

they take longer to stop when they are empty

38 / 40

When inspecting your bus, you must make sure that:

Every handhold and railing is secure.

Rider signaling devices are working.

All of these answers are correct.

Emergency exit handles are secure.

39 / 40

The method for testing hydraulic brakes for leaks is to _____.

pump the brake pedal 5 times and apply firm pressure for 3 seconds the pedal should not move

all of these answers are correct

pump the brake pedal 3 times and apply firm pressure for 5 seconds the pedal should not move

hold the brake down for 5 seconds and listen for leaks

40 / 40

Upon what does the amount of liquid you can carry in a load depend?

All of the answers listed.

The amount of expansion that will occur.

The weight of it.

The legal weight limits.

Your score is

The average score is 0%

5/5 - (3 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A north carolina Commercial Drivers License

To be eligible for a CDL in North Carolina, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within North Carolina only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of North Carolina).

North Carolina applicants must provide proof that they are medically fit to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form CDL-MED-1) Medical Certification of Driver Type or Commercial Driver’s License
Medical Card
Full Medical Report (depending on the circumstances)

Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in North Carolina. Applicants can be disqualified from the application process for having multiple licenses.

North Carolina CDL Endorsements
H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer

Hit the Open Road

north carolina CDL License Test Tips

All North Carolina CDL applicants must pass the general knowledge test prior to taking the skills test. The general knowledge test consists of 50 questions. To pass the North Carolina test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The North Carolina skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans who were discharged within 1 year of the application and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must:

Be active duty military personnel.
Have operated a motor vehicle equivalent to a commercial motor vehicle in the military within 2 years of the application date.
Submit a Certification for Waiver of CDL Skills Test for Military Personnel.

Additional Information

Information on the North Carolina Department of Transportation

The North Carolina Department of Transportation provides administers CDL license requirements in North Carolina. To get more information contact them via:

Website: https://www.ncdot.gov/dmv/license-id/driver-licenses/commercial/Pages/default.aspx

Phone: 915.715.7000

Additional North Carolina CDL Helpful Links

Please use the links below to access more valuable North Carolina CDL testing resources and to learn more about practice driving tests for the state of North Carolina.

north carolina CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A north carolina Commercial Drivers License

Hit the Open Road

north carolina CDL License Test Tips

Additional Information

Information on the North Carolina Department of Transportation

Additional North Carolina CDL Helpful Links

north carolina
CDL Practice Test